4-73. The ends of the triangular plate are subjected to three couples. Determine the magnitude of...

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4-73. The ends of the triangular plate are subjected to three couples. Determine the magnitude of the force F so that the resultant couple moment is 400 N m clockwise. 600 N F 600 N -F 40° 40° 1 m 250 N 250 N Prob. 4-73 4-73. The ends of the triangular plate are subjected to three couples. Determine the magnitude of the force F so that the resultant couple moment is 400 N m clockwise. 600 N F 600 N -F 40° 40° 1 m 250 N 250 N Prob. 4-73